Division as Repeated Subtraction (Math TS)

In a bookstore, Toby places 20 books on shelves with 4 books on each shelf.  How many shelves does Toby need?

What is asked?

• The number of books Toby needs.

• The number of shelves Toby needs.

• How many shelves does Toby need?

• The amount of shelves Toby needs.

In a bookstore, Toby places 20 books on shelves with 4 books on each shelf.  How many shelves does Toby need?

What are the given?

• 20 books on shelves with 4 shelves on each book

• 20 shelves on books with 4 books on each shelf

• 20 shelves with 4 books on each shelf

• 20 books on shelves with 4 books on each shelf

In a bookstore, Toby places 20 books on shelves with 4 books on each shelf.  How many shelves does Toby need?

What is the Array?

In a bookstore, Toby places 20 books on shelves with 4 books on each shelf.  How many shelves does Toby need?

What is the Subtraction Sentence?

• 20-4-4-4-4-4=5

• 20-4-4-4-4-4=0

• 20-5-5-5-5=0

• 20-5-5-5-5=4

In a bookstore, Toby places 20 books on shelves with 4 books on each shelf.  How many shelves does Toby need?

What is the Division Sentence?

• 20÷5=4

• 20x4=5

• 20÷4=5

• 20x5=4

In a bookstore, Toby places 20 books on shelves with 4 books on each shelf.  How many shelves does Toby need?

What is the Final Answer?

• Toby needs 5 shelves.

• Toby needs 5 books.

• Toby needs 4 shelves.

• Toby needs 4 books.